Engineering, 23.07.2021 03:50, montanolumpuy
The impeller shaft of a fluid agitator transmits 20 kW at 430 rpm. If the allowable shear stress in the impeller shaft must be limited to 65 MPa, determine (a) the minimum diameter required for a solid impeller shaft. (b) the maximum inside diameter permitted for a hollow impeller shaft if the outside diameter is 36 mm. (c) the percent savings in weight realized if the hollow shaft is used instead of the solid shaft. (Hint: The weight of a shaft is proportional to its cross-sectional area.)
Answers: 2
![$d=\sqrt[3]{\frac{16 T}{\pi \tau}}](/tpl/images/1398/4366/5f364.png)
![$d=\sqrt[3]{\frac{16 \times 444.37}{3.14 \times 65}}](/tpl/images/1398/4366/aa582.png)
![$d=\sqrt[3]{34.83} $](/tpl/images/1398/4366/50b34.png)
mm
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The impeller shaft of a fluid agitator transmits 20 kW at 430 rpm. If the allowable shear stress in...
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